AlterQuery  tab (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier m1
     Function map (children 1)
      ExpressionList (children 2)
       Literal Float64_2
       Literal \'aa\'
   ExpressionList (children 1)
    Assignment m1 (children 1)
     Function map (children 1)
      ExpressionList (children 2)
       Literal Float64_3
       Literal \'aaa\'
 Identifier tab
